Impulse-sending device



H. P. CLAUSEN.

IMPULSE SENDING DEVICE. APPLICATION FILED FEB.23, I918.

1,334,080, Patented Mar. 16, 1920.

V lhveE/Or: Henry P Clause UNITED STATES PATENT OFFICE.

HENRY P. CLAUSEN, OF MOUNT VERNON, NEW YORK, ASSIGNOR T0 WESTERN ELECTRIC COMPANY, INCORPORATED. OF NEW YORK, Y., A CORPORATION'OF NEW YORK.

IMPULSE-SENDING DEVICE.-

Specification of Letters Patent.

Patented Mar. 16, 1920.-

.Application filed February 23, 1918. SerialNo. 218,825.

To all whom it may concern:

Be it known that I, HENRY P. CLAUSEN, a citizen of the United States, residing at Mount Vernon, in the county of Westchester, State of New'York, have invented certain new and useful Improvements in Im-' pulse-Sending Devices, of which the following is a full, clear, concise, and exact description.

This invention relates to impulse sending devices, and more particularly to impulse sending devices used in automatic telephone systems for directively controlling automatic telephone switches.

In automatic telephone systems it is sometimes desirable to make certain impulses of each series of a different character than the other impulses of the series, as for example, to make the first impulse a long one, and all the rest of the impulses short.

It is the object of this invention to provide means whereby an impulse sending device, which is originally designed to produce impulses of only one character, may be readily modified to produce impulses of difierent characters.

More specifically, the object of this invention is to provide means whereby an impulse sending device, which is originally designed to produce only impulses of short duration may be adapted to produce a long impulse for the first impulse, and a short impulse for each impulse produced after the first one of each series.

A feature of this invention is the provision of means which is adjusted during the setting of dial to control the actuation of the impulse springs during the return movement of the dial.

Other features will appear from the following description and claims.

The drawin is a perspective view of a portion of an impulse sending device of the type disclosed in Patent 1,161,854 issued Nov. 30, 1915, to O. F. Forsberg; which has been modified to embody the features of this invention.

In the drawing, 1 is a rotatable shaft which is mounted in a frame (not shown) of the sending device. A finger dial 2 provided with finger holds 3 and a toothed impulse wheel 4 are rigidly secured to the shaft 1. Teeth 5 of the wheel 4 are of equal thickness, and are equally spaced from each other, with the exception of the first and last, as is clearly shown in the drawing. A coil spring 6 is wound around the shaft 1,

and has one of its ends fastened to theshaft 1, and the other end fastened to the'frame (not shown). A governor 7 is also attached to the shaft 1. Thisgovernor may be any one of the well-known types of governors used in impulse sending devices, and since the same does not form a part of the invention, further disolosure'or description thereof is believed unnecessary. A pair of normally closed impulse springs 8 and 9 are mounted on the frame (not shown) in any well-known manner. Three stationary pins 10, 11 and 12 are also fastened to the frame (not shown). A U-shaped member 13 is pivotally mounted on the pin 10, and its .movement is limited by an arm 14 thereof engaging the ins 11 and 12. The other arm 15 of the U-s aped member 13 is prolonged so that a pin 26 of insulating material carried thereby is in operative relation with the impulse spring 8. Another U-shaped member 16 is pivotally mounted upon the pin 10. One arm 17 of the U-shaped mem-- ber 16 carriesa flat spring 18 which engages the side of the U-shaped member 13. The U-shaped member .16 is movable relative to the U-shaped member 13, but the spring 18 is provided to produce sufficient friction between itself and the arm 15, so that U-shaped member 13 will move with the U-shaped member 16, unless the U-shaped member 13- is held by a stronger force than that exerted by the spring 18. The arm 15 has a slightly raised portion 19, over which the spring 18 has to move when the U-shaped member 16 is moved relative to the U-shaped member 13. A lug 20 extending from the edge of the arm 15 determinesv the extent to which the U-shaped member 16 may be moved in'a clockwise direction as viewed from the right relative to the U-shaped member 13. The U-shaped' member 16 has a finger 21 which is in operative relation to the teeth 5 of the impulse wheel 4. A positionin tends to hold the U-shaped memer 16 in its normal position which. is indicated in the drawing.

The. operation of the impulse sending device. is as follows: When the dial is operspring 22 operating the dial reaches the finger stop 23. The dial is then released and is returned to normal by the coiled spring 6.

When the first tooth 5 on the impulse wheel 4 engages the finger 21 during the forward movement .of the dial, the U- shaped member 16 is rotated suiliciently in a counter-clockwise direction to allow the tooth to pass by. As the arm 14 of the U- shaped member 13 is normally in engagement with the pin 12, the member 13 cannot be moved any farther in a counterclockwise direction. Since the force exerted by the person operating the dial is greater than that of spring 22 and the friction produced by the spring 18, the spring 18 is moved over the raised portion 19 of the arm 15. As soon as the first tooth has disengaged the finger 21, the spring 22 tends to rotate the member 16 back to its normal position, but the force exerted by the spring 22 is not sufficient to move the spring 18 over the raised portion 19. Theforce exerted by the contact spring 8 against the pin 26 is also sufiicient to prevent the spring 22 from rotating both U- shaped members. It will be obvious that the finger 26 is now in a position where it can be iven a longer clockwise movement than w en it is in its normal position. Further engagement of the teeth of the wheel 4 with the finger 21 during the forward movement of the dial rotates the U shaped member 16 in a counter-clockwise direction, but after each tooth has passed by the finger, the U-shaped member 16 is prevented in the" manner described, from returning to its normal position.

.As soon as the dial is released by the person operating it, the coiled spring 6, which is wound up during the forward movement of the dial, rotates the dial and the impulse wheel 4 back to their normal position.

NV hen the first engagement'of a tooth of wheel 4 and the finger 21 takes place, the U-shaped members 16 and 13 are rotated as a unit in a clockwise direction, untilthe arm 141 engages the stationary pin 11. This pin 11 stops the movement of the U-shaped arm 13, but the strength of the spring 6 is suflicient to cause the spring 18 to move over the raised portion 19- of the arm 15, after the engagement of arm 14 with pin 11. The contact springs 8 and 9 are separated as soon as the member 13 leaves its normal position, and are maintained sepa rated until after the spring 18 is moved over the raised portion 19, and the U- shaped members are in their normal posi-- tion relative to each other, at which time the first tooth which engages the finger 21 during, the return -movement of wheel 4 passes out of engagement with the finger 21. The U-shaped members 13 and 16 are then returned to their normal position by the positioning spring 22, and the contact springs 8 and 9 are closed. The finger 21 1 is now in its normal position so that when it is engaged by the second tooth, it has a shorter movement than when it was engaged by the first tooth. This results in a shorter interruption of the contact springs usts the U-shaped members relative to each other in such a manner that the initial engagement of a tooth on the wheel 4; with the finger 21 during the return movement .of the dial is maintained for a longer period of time than any of the subsequent engage-' ments and results in a long interruption of the impulse springs. By varying the distance that the U-shaped member 16 is allowed to move relative to the U-shaped member 13 any desired increase in the length of the first interruptions of the impulse springs 8 and 9 can be obtained.

What is claimed is:

1. In an impulse sending device, impulse springs, an impulse wheel having movements in different directions and means operated by said wheel while moving in one direction for actuating said impulse springs to cause the initial impulse of a series to be of different character from the succeeding impulses of said series.

2. In an impulse sending device, impulse springs, a rotatable impulse wheel having forward and return movements, two elements under the control of said wheel, and

means whereby one of said elements is given forward and return movements, two elements under the control of said wheel, and

means whereby one of said elements is given a. movement relative to the other during the forward movement of said wheel, and both a unitary and a relative movement with respect to said other element during the return movement of said wheel, one of said elements being adapted during the return movement of said wheel to actuate said impulse springs to produce impulses of diiferent character. i

4. In an impulse sending device, impulse springs, an impulse wheel having teeth of equal thickness, and means operated by said wheel while said wheel is moving in a single direction for actuating said impulse springs to make the first impulse of each series of im ulses longer than the other impulses of t e same series.

5. In an impulse sending device, impulse springs, a rotatable impulse wheel having forward and return movements, two elements under the control of said wheel, and means whereby one of said elements is given a movement relative to the other during the forward movement of said wheel, and whereby the first named element, during said return movement, is given an initial unitary movement, then a relative movement and finally a unitary movement with respect to said other element, one of said elements being adapted during said return movement to actuate said impulse springs to produce impulses of different character.

6. In an impulse sending device, impulse springs, an impulse wheel rotatable in a forward and a backward direction, means for actuating said impulse springs during the return movement of said wheel, and means 1 springs,

actuated by said wheel in its forward movement for controlling the actuation of said springs by said actuating means.

7. In an impulse sending device, impulse an impulse wheel rotatable in a forward and a backward direction, means for actuating said impulse springs during the backward movement of said wheel, and

means actuated by said wheel in its forward movement for controlling the ini-tial actuation of said springs by said actuating means.

8. In an impulse sending device, impulse springs, an impulse wheel rotatable in aforward and a backward direction, teeth on said wheel, means for actuating said impulse s'prings, and'means actuated by said teeth during the forward movement of said wheel for controlling the actuation of said springs by said actuating means during the backward movement of said wheel.

9. In an impulse sending device, impulse springs, an impulse wheel rotatable in a forward and a backward direction, means for actuating said impulse springs during the backward movement of said wheel, and means actuated by said wheel in its forward movement for causing the initial actuation of said springs to be of a difierent character than the other actuations produced by said actuating means.

10. In an impulse sending device, impulse springs, an impulse wheel rotatable in a forward and a. backward direction, means for actuating said impulse springs during the backward movement of said wheel, and means actuated by said wheel in its forward movement for causing the first actuation of said springs by said actuating means to be maintained for a different length of time than the subsequent actuations produced by said actuating means during the backward movement of said wheel.

In Witness whereofI hereunto subscribe my name this 16th day of February,

HENRY P; OIJAUSEN, 

